Source : Webster's Revised Unabridged Dictionary (1913)

Effeminacy \Ef*fem"i*na*cy\, n.; pl. {Effeminacies}. [From
   {Effeminate}.]
   Characteristic quality of a woman, such as softness,
   luxuriousness, delicacy, or weakness, which is unbecoming a
   man; womanish delicacy or softness; -- used reproachfully of
   men. --Milton.

Source : WordNet®

effeminacy
     n : the trait of being effeminate (derogatory of a man) [syn: {effeminateness},
          {sissiness}, {womanishness}, {unmanliness}]